Online Exam is a subscription-based mobile app that conducts online examinations on various topics, evaluates them and then rewards prizes to the toppers. Students can register and enroll in the app via Google and Facebook. The app is built on both Android and iOS apps using Flutter. The main benefit of the Flutter is that same codebase can be used for both Android and iOS with same functionalities. The app features minimalistic UI and UX for a better experience> Students have their separate dashboard where they can see their test history with section-wise break-up of the marks to get insights. The app has been highly successful among the students of various classes, universities, and streams- it was an innovative idea by our client that has been executed well by our expert team members.